Ehm, this is just the normal method of installing gentoo, isn't it?
Just follow the install manual..... You don't need a kernel, if you are running in chroot.
Maybe you get problem extracting the tarball as user, because of the /dev permissions.
I don't know zilch about sparc architectures, but the install process should be as the i386 one in general....

Is this a trick question?? Is there any deeper meaning or joke i don't get?? (No offense meant, just curious)_________________Citadel Groupware | Avahi Howto

He's talking about solaris, and the answer is no, as long as the machine is running solaris you can't run linux binaries in it (yeah it's possible on x86 with the linux binary emulation or something like that, but that doesn't exist for sparc)._________________Gustavo Zacarias
Gentoo/SPARC monkey